William Optics 2" Swan Series Eyepiece - 33mm

Product Info

Manufacturer Description

The Swan eyepieces are super wide angle designs with a 72° apparent field of view. They use simple but sophisticated five-lens optical systems for generally higher contrast than the more complicated optical designs used in some other super wide angle eyepieces that use up to eight lenses. All lenses are fully multicoated for high light transmission. Lens edges and internal field stops are blackened to reduce internal reflections and improve contrast. The eyepiece rubber grip ring is useful for safer handling of the heavier 2 eyepieces in cold weather when wearing gloves. The eyepieces have soft roll down rubber eyecups for eyeglass use. They can be used for all types of observing, with all telescope types, but they are recommended for use with focal ratios up to f/6 and above. Dust caps are provided for both ends of each eyepiece. A soft protective drawstring-equipped velvet storage bag is standard equipment with each.

This 5-element super-wide angle 33mm SWAN EP's panoramic views at 72 deg. FOV will leave you speechless! A premium eyepiece at a fraction of the cost its worth!

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User Notes:

Review by Dazahko of Azusa, CA.

1359417600

Jan 28, 2013

4.0Great on SCT, fair on fast scope

Pros:

Comfortable Viewing

Cons:

Comments:

I have both this and the 40mm versions. It's wonderful on my C-11 but marginal on my 8" f/5. The 40mm is unusable on that scope, but this one is OK. There is coma on the edges, but it is not enough to keep me from using it. It's great being able to see all of M45 at the same time. This eyepiece gives a 140' REAL field of view (51' on the C-11).